Magnetic post co



E B PARSONS ET AL ELECTRICAL CormEcTOR. FILED FEB. 23. I921.

Dec. 26, 1922.

amen! 01 P02150226,

Patented Dec. 26, 1922.

UNITED STATES 1,439,752 PATENT OFFICE.

EDWARD B. PARSONS AND JAMES W. BULLINGTON, OF OILTON, OKLAHOMA, ASSIGNORS TO OKLAHOMA MAGNETIC POST (30., OF OILTON, OKLAHOMA.

ELECTRICAL CONNECTOR Application filed February 23,- 1921 Serial 110.447,]05.

In the operation of magnetos on automobiles in general, dimming of the lights, and mis-firingof the spark-plugs, is rimarily due to presence of the accumu atlon of dirt on the terminals, or terminal in the magneto, and provision ismade for-;the-removal of the terminal for cleaning, and this is particularly true of the construction and arrangement now employed oniFord automobiles. i '1 The, main object of the present/invention is therefore to provide for an extremely sim ple, inexpensive and etlicientterminal construction, whereby the removal of the same is facilitated for the quick cleaning of the contact point thereof, and its replacement back into operative position. a

- With the'foregoing and other objects in view, the invention resides in the certain new and useful construction and arrangement of parts as will be hereinafter more fully described, set forth in the appended claims, and illustrated in the accompanying drawing, in which Fig. 1 is a'fragmentary'long'itudinal section ofthe magneto housing showing the terminal embodied therewith,

Fig. 2 is a fragmentary section of the top wall of the housing showing the terminal and its mounting in plan,

Fig. 3 is a vertical section taken on the line 3-3 of Fig. 2. and,

Fig. 4 is a detail, in perspective, showing the locking column for retaining the terminal in position.

Referring to the drawing. the numeral 10 indicates the magneto within the housing 11, and 12 the commutator of the magneto 10 in position below the terminal opening of the housing, all of usual construction and arrangement as now obtaining in the Ford type of automobiles.

The removable-terminal for the magneto 10 is supported in the casingof substantially cylindrical form as in 13, having an annular flange 14 atits lower end and by means-of whichit is-to be secured to the housing through the medium of suitable fastenings or screws 15. -The casing 13 is formed with a central lower bore .16 in registryf-with a circular opening 17'formed in the housing 11 immediately above the commutator '12 of the magneto 10, and an .upper'bore 180i a greater diameter'than the-borellfi concentric with respectto the latter.- Seated-on the shoulder '19 between-the bores 1.6dand118 is a member 20, of; substantially frustoconical form-rand 'made. of any'suitable: insulated material, the upper endof whicb'is projected above thetop edge of the casing 13.. Formed with the member 20- is :a': cylindrical' sleeve portion '21 which':extends downwardly/wot the bore 16: and -:pro'ects' through.- the opening'171 and into the using 1L Interposed between -the shoulder. 19 Eand" the! :shoulder portion of thenmember 20 overlying=the same, is a gasket-22 of rubber or ther'like. Extending through the member :QO-is a terminal rod 23,:oiaf'coi1ducting material of brass or 'the like, which has its-upper projected end threaded to receive-a washer 24 and a'circuit lead (25) binding nut 26. The lower end of the-rod 23 is projected concentrically within the bore of the sleeve 21 and has secured toits free end a' coiled spring 27 which, in turn. has its l'owerend projecting-below the end of the sleeve 21 and-supportson its free ends contact 28 tensioned against the commutator 12. of the magneto. For the purpose-'ofretaining' the member 20 firmly in position-within the casing 13, a cylindrical member 29 is formed with a tapered bore adapted to be fitted over the similarly tapered upper end of the member 20, and is arranged to engage the latter at a point so as to have its upper end disposed in the plane of the top edge of the casing 13. The member 29 is provided with circular lugs 30 one diametrically opposite the other and projecting laterally therefrom, which lugs 30 are adapted to be engaged in complemental inclined angular slots 31 formed in the wall of the upper portion of the casing 13 one leg of each slot 31 opening through the top edge of the latter. When the lugs are inserted downward of the open legs of the slots 31, the free projecting ends f the same can be grasped by the fingers s as to more the roller around the runienl surface of the member 20 and the pins to the closed ends of the slots.

In the use of the teriziiuiil, the uu-uiher 2() with its sleeve poitiou 21. has ussemhh-d the-rein the rod 23 carrying the spring 37 and the contact 28, by inserting the some upward of the sleeve portion 21 and securing the parts in position by means of the washer -24'an'd thebinding nut 26. The member 30. witnth'ese members assembled with the 'samey is =now inserted into the casing: 13. imfter the gasket 22 has been seated on the annular shoulder 19, and the member 29 is; then-.placediover t-he upper end of the membe: 20 with the lugsBOdn registry with the ropen endsof fthe-s lots 31. The depth of the isldts=3l :is-sufiieient to act in a manner to :e'xert-a downward pressure on the lugs 30 when thesanrej are moved endwise of the 'sldts,-so as"=to-'efiect-a sliqht compression of sbhe gasketi22iunder"the:s' ioulder portion of he (member 29,= whereby an airtight joint is iestahlisked ibetvte envthe same. The termilndlsiue now ready to receive the terminal leadflfi of ithemircuit of the automobile,

lSheuld any trouble ?be experienced as by the dim'miilg df ithe lights or n isfiring, of the "sflark'qalu be heard, it may indicate an accumulation ofidirt on'the contact. 28, and tthesame 5s tobednspecbed and elenned,h merely turning'tlr'e'lugsfifl in the slots 31 'nhd *mitiidrmving' the member 29 and the member 20,"ei'ther separately or together. and nvith or-wlthout'the disconnection of the leallflfi firom @the'rod 23, as may be desired II-t 'is-boibeunddrstood, that, while'we deseribe the invention particularly in connechim with mag-notes as used on Ford automobiles,-the-same is ca ble-of u more genare! use wherever similar devices may be employed or on any other type of automobile,w1ncl, also that various changes in the details efieontru'etion and arrangement of 'p'artsmay bezresorted to without departing itom'the s irit and-scope of the invention.

Havin t is'fully described the invention. what is'e imed, is

i. In 7! device f the clas described. a erlindriezrl easing having a lower bore and an upper bore of greater diameter than the lower bore, an insulated body of substiur tinlly irusto-ronicul form within the upper bore of said (using and liZHlllfI a sleeve PHI- tion depending: in the lower bore thereof,

:: terminal contact carried by the upper por-.

tion of said insulated body and depending' through the sleeve portion thereof, a rnemoer encircling the upper portion of said insnla'ted body within said housing, slots formed in the opposed wall of said casing, and lugs carried by said member adapted 'for engagement with said slots. whereby to reiuovably secure said body in position. 7

2. In a deviee of -the -kind dB'SCllbed,"8 eylindeieal easing. an insulated body iyithin said casing. a terminal contact carried within saidbody and depending below the lower end thereof a =member encircling a portion ofsaid insulated within 'said casing, slots formed in the opposed"wa:ll of said easing-and lugs carried-on said member and adapted for engagement with said slots,

whereby to removably secure said' body in portion thereof, a locking member fitted over :the upper end of said insulated slots formed in the wall of said=casing, and lugs formed with said locking member adapted for engagement with said slots whereby to removably secure said insulated body in position.

In testimony whereof, we-afiixour signatures hereto.

EDWARD "B. PARSONS. JAMES W. BULLING'I-ON. 

